RSPAN mirrors traffic to a destination interface on a remote Vyatta router. RSPAN mirroring has source and destination Vyatta router. On the source router, traffic from source interfaces is mirrored to a VLAN interface (VIF). This RSPAN VLAN is dedicated to transporting mirrored traffic to the remote router. RSPAN on the destination router receives mirrored traffic on this VLAN interface and forwards it to a destination interface on this router.
Source interfaces can be both physical and VLAN interfaces. Both ingress and egress traffic on source interfaces can be mirrored. For an RSPAN destination session, the destination interface is a physical port to which a network monitoring tool is connected for capturing and analyzing the traffic.
The following figure shows an RSPAN port mirroring session on source and destination Vyatta router.